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Single-Job Expert Agents Before Orchestration

by Tomer Cohen on December 4, 2025

LinkedIn's Full Stack Builder model represents a fundamental reimagining of product development in the AI era, creating a more adaptable and efficient organization by collapsing traditional role boundaries and empowering builders to work across the entire product development lifecycle.

The model addresses how the pace of change is outstripping organizations' ability to respond, with 70% of job skills expected to change by 2030 and most of today's fastest-growing jobs not existing a year ago.

The Full Stack Builder Approach

  • Goal: Empower builders to take ideas to market regardless of their role in the stack
  • Focus: Enable fluid interaction between human and machine rather than sequential handoffs
  • Structure: Small, nimble pods of builders focused on missions rather than large specialized teams
  • Career path: Created a formal "Full Stack Builder" title with its own career ladder
  • Training: Replaced APM program with Associate Product Builder program teaching coding, design, and PM skills

Three Key Components for Implementation

1. Platform Infrastructure

  • Re-architect core platforms so AI can reason over them
  • Create composable UI components with server-side support
  • Customize third-party tools to work with internal systems
    • Off-the-shelf AI tools rarely work immediately with existing codebases
    • Requires significant investment in integration and customization

2. AI Tools and Agents

  • Build specialized agents for specific functions:
    • Trust agent: Evaluates potential vulnerabilities and harm vectors
    • Growth agent: Critiques ideas based on growth potential
    • Research agent: Trained on member personas and historical research
    • Analyst agent: Queries the LinkedIn graph without requiring SQL knowledge
    • Maintenance agent: Fixes failed builds (handling ~50% of build failures)
  • Key learning: Don't just give AI access to all data
    • Carefully curate "golden examples" for training
    • Be selective about the knowledge base and context window

3. Cultural Transformation

  • Change management is critical - tools alone aren't enough
    • "It's not enough to give them the tools, you have to build the incentives, programs, motivation, and examples"
  • Successful approaches:
    • Redefine role expectations and performance evaluations
    • Pilot success with pods to demonstrate value
    • Celebrate wins and highlight examples in all-hands meetings
    • Make tools accessible and incorporate feedback
    • Create training programs that demonstrate the new way of working

Key Insights on Implementation

  • Top performers adopt AI tools most readily
    • They have "an innate need to be at the cutting edge of how you build"
    • They're willing to invest time upfront to gain velocity later
  • Focus human builders on their unique strengths:
    • Vision and idea generation
    • Empathy and understanding unmet needs
    • Communication and alignment
    • Creativity beyond the obvious
    • Judgment in complex, ambiguous situations
  • Automate everything else
  • Be patient but ambitious
    • "Be impatient about the goal and have high ambition, but be very thoughtful and patient about how you bring it to life"
    • Invest upfront in platform, tools, and culture to reap benefits later

Practical Advice for Leaders

  • Don't wait for formal reorganization to start building differently
  • Overcommunicate both vision and progress
  • Set clear KPIs/OKRs for the transformation
  • Recognize that not everyone wants to be a full stack builder
    • Specialization still has a place, just not as prevalent as before
  • Start with small teams but ensure visibility across the organization
  • Be willing to invest significantly upfront before seeing productivity gains

Emerging Results

  • Time savings: Teams saving hours of work per week
  • Quality improvements: Better insights and discussions
  • Increased adaptability: Teams can respond more quickly to change
  • Cross-functional mobility: Enables career transitions (e.g., researcher to growth PM)